VERTEBRATE ZOOLOGY CA (ZOOS2202)

Biological Science - BS

Semester: Second Semester

Level: 200

Year: 2017

CONTROL ASSESSMENT (CA): VERTEBRATE ZOOLOGY
ZOOS2202 (JULY 2017)
PART 1: 10 marks
1. Short excretory tubules of fishes derived from the ectoderm that do not open in to the
coelom derivatives but instead terminate blindly at their inner ends in flask-shaped cells are
called ____________________________ 1mk.
2. Label the different fin types of the bony fish below. 3mks
3. Fish seed is referred to as _____________ or _______________ 1mk
4. Adult sea squits have only one main chordate characteristic which is _______ 1mk
5. Lampreys or eel suckers are easily distinguishable from the true eels and, indeed, from
most of the true fishes, by _______________ 1mk
6.
Name 2 uses of the pectoral fins of bony fishes, 1mk
7.
Name two major fish groups that practice viviparity. 2mks
Part 11 (10 marks)
1-
Explain why Amphisbaenian reptiles are called two headed snakes? 2marks
2-
Give two different characters between Bufonidae family (toad) and Ranidae (frog) 2marks
3-
Define phaneria and which type of phaneria is found on amphibian? 2marks
4-
Compare anamniotic egg and amniotic egg. Which groups of vertebrates which produce
anamniotic egg and amniotic egg? 4 marks
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